July 22, 2002 - A Czech doctor says that by drinking beer every day men may keep their sex lives active.

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"If men drink two beers a day they can stave off impotence," says Dr. Pavel Zemek of the Czech Center of Gerontology in Prague.

Zemek says his research shows beer can have a "powerful effect" to stop the arteries becoming blocked. "On the basis of clinical tests we can say moderate amounts of beer lessens arterial sclerosis, one of the causes of erectile dysfunction," he told a local newspaper.

As others do when discussing beer and health, he warns against excessive drinking. "Drink too much beer in one go and the positive effects are negated," he says, "but, as the saying goes, a little bit of what you fancy does you good."